That's a Trico motor and those are their patent numbers. It appears to be the correct motor with the exception of the addition on the end of the shaft to permit the use of a later style wiper arm and blade.
They are pretty easy to restore. You can obtain a kit including a replacement paddle that is inside the semi-circular portion of the motor from A&L Parts Specialties, Canton, Connecticut, contact information for them is on a thread currently running herein. Likely there are other sources as well. About the only reason that they prove to be un-restorable is if they have blisters in the casting internally.